Flutter 如何在flatter中绘制自定义形状卡
我只想制作这样的卡片Flutter 如何在flatter中绘制自定义形状卡,flutter,dart,shapes,card,Flutter,Dart,Shapes,Card,我只想制作这样的卡片 代码如下所示，我使用CustomPaint小部件绘制自定义形状，然后在Card小部件中使用stack来正确放置小部件 我没有看到图像，因此将其更改为粉红色以显示图像： 下面是卡小部件的代码，然后是CustomPainter类： 自定义绘制类： 输出： 灰色容器用于描述自定义形状内的内容 整个代码： import 'package:flutter/material.dart'; void main() { runApp(MyApp());
代码如下所示，我使用CustomPaint小部件绘制自定义形状，然后在Card小部件中使用stack来正确放置小部件 我没有看到图像，因此将其更改为粉红色以显示图像： 下面是卡小部件的代码，然后是CustomPainter类： 自定义绘制类： 输出： 灰色容器用于描述自定义形状内的内容 整个代码：
import 'package:flutter/material.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Custom Card Design',
theme: ThemeData(
primarySwatch: Colors.amber,
),
home: MyHomePage(),
);
}
}
class MyHomePage extends StatefulWidget {
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
@override
Widget build(BuildContext context) {
return Container(
color: Colors.amber,
child: Center(
child: Card(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(50.0)),
elevation: 10.0,
child: Container(
width: 300.0,
height: 400.0,
child: Stack(
alignment: Alignment.bottomCenter,
children: [
// This will hold the Image in the back ground:
Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(50.0),
color: Colors.pink[100]),
),
// This is the Custom Shape Container
Positioned(
bottom: 0.0,
left: 0.0,
child: Container(
color: Colors.red,
child: CustomPaint(
painter: CustomContainerShapeBorder(
height: 100.0,
width: 300.0,
radius: 50.0,
),
),
),
),
// This Holds the Widgets Inside the the custom Container;
Positioned(
bottom: 10.0,
child: Container(
height: 80.0,
width: 260.0,
color: Colors.grey.withOpacity(0.6),
child: null,
),
),
],
),
),
),
));
}
}
/// The {CustomContainerShapeBorder} should be reactibe with different sizes,
/// If it isn't then chamge the offset values.
class CustomContainerShapeBorder extends CustomPainter {
final double height;
final double width;
final Color fillColor;
final double radius;
CustomContainerShapeBorder({
this.height: 400.0,
this.width: 300.0,
this.fillColor: Colors.white,
this.radius: 50.0,
});
@override
void paint(Canvas canvas, Size size) {
Path path = new Path();
path.moveTo(0.0, -radius);
path.lineTo(0.0, -(height - radius));
path.conicTo(0.0, -height, radius, -height, 1);
path.lineTo(width - radius, -height);
path.conicTo(width, -height, width, -(height + radius), 1);
path.lineTo(width, -(height - radius));
path.lineTo(width, -radius);
path.conicTo(width, 0.0, width - radius, 0.0, 1);
path.lineTo(radius, 0.0);
path.conicTo(0.0, 0.0, 0.0, -radius, 1);
path.close();
canvas.drawPath(path, Paint()..color = fillColor);
}
@override
bool shouldRepaint(CustomPainter oldDelegate) {
return true;
}
}
代码如下所示，我使用CustomPaint小部件绘制自定义形状，然后在Card小部件中使用stack来正确放置小部件 我没有看到图像，因此将其更改为粉红色以显示图像： 下面是卡小部件的代码，然后是CustomPainter类： 自定义绘制类： 输出： 灰色容器用于描述自定义形状内的内容 整个代码：
import 'package:flutter/material.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Custom Card Design',
theme: ThemeData(
primarySwatch: Colors.amber,
),
home: MyHomePage(),
);
}
}
class MyHomePage extends StatefulWidget {
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
@override
Widget build(BuildContext context) {
return Container(
color: Colors.amber,
child: Center(
child: Card(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(50.0)),
elevation: 10.0,
child: Container(
width: 300.0,
height: 400.0,
child: Stack(
alignment: Alignment.bottomCenter,
children: [
// This will hold the Image in the back ground:
Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(50.0),
color: Colors.pink[100]),
),
// This is the Custom Shape Container
Positioned(
bottom: 0.0,
left: 0.0,
child: Container(
color: Colors.red,
child: CustomPaint(
painter: CustomContainerShapeBorder(
height: 100.0,
width: 300.0,
radius: 50.0,
),
),
),
),
// This Holds the Widgets Inside the the custom Container;
Positioned(
bottom: 10.0,
child: Container(
height: 80.0,
width: 260.0,
color: Colors.grey.withOpacity(0.6),
child: null,
),
),
],
),
),
),
));
}
}
/// The {CustomContainerShapeBorder} should be reactibe with different sizes,
/// If it isn't then chamge the offset values.
class CustomContainerShapeBorder extends CustomPainter {
final double height;
final double width;
final Color fillColor;
final double radius;
CustomContainerShapeBorder({
this.height: 400.0,
this.width: 300.0,
this.fillColor: Colors.white,
this.radius: 50.0,
});
@override
void paint(Canvas canvas, Size size) {
Path path = new Path();
path.moveTo(0.0, -radius);
path.lineTo(0.0, -(height - radius));
path.conicTo(0.0, -height, radius, -height, 1);
path.lineTo(width - radius, -height);
path.conicTo(width, -height, width, -(height + radius), 1);
path.lineTo(width, -(height - radius));
path.lineTo(width, -radius);
path.conicTo(width, 0.0, width - radius, 0.0, 1);
path.lineTo(radius, 0.0);
path.conicTo(0.0, 0.0, 0.0, -radius, 1);
path.close();
canvas.drawPath(path, Paint()..color = fillColor);
}
@override
bool shouldRepaint(CustomPainter oldDelegate) {
return true;
}
}
import 'package:flutter/material.dart';
main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Drawing Paths',
home: Container(
color: Colors.white,
child: CustomPaint(
painter: CurvePainter(),
),
),
);
}
}
class CurvePainter extends CustomPainter {
@override
void paint(Canvas canvas, Size size) {
var paint = Paint();
paint.color = Colors.blueAccent;
paint.style = PaintingStyle.fill;
var path = Path();
path.moveTo(size.width, size.height * 0.7);
path.quadraticBezierTo(size.width * 0.99, size.height * 0.79,
size.width * 0.8, size.height * 0.8);
path.lineTo(size.width * 0.08, size.height * 0.8);
path.quadraticBezierTo(size.width * 0.001, size.height * 0.81,
0, size.height * 0.86);
path.lineTo(0, size.height * 0.95);
path.quadraticBezierTo(size.width * 0.001 , size.height * 0.98,
size.width * 0.08, size.height * 0.99);
path.lineTo(size.width * 0.8, size.height * 0.99);
path.quadraticBezierTo(size.width * 0.99, size.height * 0.99,
size.width, size.height * 0.89);
canvas.drawPath(path, paint);
}
@override
bool shouldRepaint(CustomPainter oldDelegate) {
return true;
}
}
import 'package:flutter/material.dart';
main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Drawing Paths',
home: Container(
color: Colors.white,
child: CustomPaint(
painter: CurvePainter(),
),
),
);
}
}
class CurvePainter extends CustomPainter {
@override
void paint(Canvas canvas, Size size) {
var paint = Paint();
paint.color = Colors.blueAccent;
paint.style = PaintingStyle.fill;
var path = Path();
path.moveTo(size.width, size.height * 0.7);
path.quadraticBezierTo(size.width * 0.99, size.height * 0.79,
size.width * 0.8, size.height * 0.8);
path.lineTo(size.width * 0.08, size.height * 0.8);
path.quadraticBezierTo(size.width * 0.001, size.height * 0.81,
0, size.height * 0.86);
path.lineTo(0, size.height * 0.95);
path.quadraticBezierTo(size.width * 0.001 , size.height * 0.98,
size.width * 0.08, size.height * 0.99);
path.lineTo(size.width * 0.8, size.height * 0.99);
path.quadraticBezierTo(size.width * 0.99, size.height * 0.99,
size.width, size.height * 0.89);
canvas.drawPath(path, paint);
}
@override
bool shouldRepaint(CustomPainter oldDelegate) {
return true;
}
}
使用CustomPaint：您需要一个自定义ShapeOrder类-像BevelDectAngleBorder/CircleBorder/ContinuousRectangleBorder/RoundedRectangleBorder/BorderStadiumBorder这样的类间接扩展该类您也可以扩展OutlinedBorder如果您需要@pskink您可以发送一个示例吗？使用CustomPaint：您需要一个自定义ShapeOrder类-类像BeveledRectangleBorder/CircleBorder/ContinuousRectangleBorder/RoundedRectangle/BorderStadiumBorder间接扩展该类如果需要，您也可以扩展OutlineBorder@pskink您可以发送一个示例吗？谢谢，但我使用自定义形状顺序。这是更好的选择在形状边框类中使用相同的路径设计谢谢，但我使用自定义形状顺序。这是更好的选择在shape border类中使用相同的路径设计